A ring knife is used to take undisturbed soil sampling device

Abstract

The utility model relates to undisturbed soil sampling technology field, concretely is a kind of undisturbed soil sampling device for cutting ring, including base, the base upper end symmetry fixedly connected with two guide columns, the upper end fixedly connected with carrying beam of guide column, the middle position of carrying beam is crossed with threaded rod, the threaded rod is connected with carrying beam threadedly, the lower end rotationally connected with pressing plate of threaded rod, the both ends of pressing plate are slidably connected with guide column, the lower end of pressing plate is installed cutting ring, the position of base corresponding cutting ring is provided with through-hole. The utility model solves the problem that traditional cutting ring sampling method needs to expand soil taking part when cutting ring is dug out with spade, and the surrounding compacted soil is easily disturbed, simultaneously solves the problem that traditional cutting ring sampling method is slow, time-consuming and laborious, and inefficient.

Description

Technical Field

[0001] This utility model relates to the field of undisturbed soil sampling technology, specifically to an undisturbed soil sampling device for a ring cutter. Background Technology

[0002] Currently, there are two main methods for testing compaction: nuclear density metering and ring sampling. Ring sampling is the most commonly used method. Soil bulk density is the ratio of the weight of a certain volume of soil (including soil particles and interparticle pores) after drying to the weight of the same volume of water. Soil bulk density can be used to calculate the weight of the topsoil and soil porosity over a certain area; it can also serve as an indicator of soil maturity, with higher-maturity soils having lower bulk density.

[0003] Traditional ring sampler sampling methods require expanding the sampling area when digging out the ring sampler with a shovel, which can easily disturb the surrounding compacted soil. In addition, traditional ring sampler sampling methods are slow, time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a undisturbed soil sampling device for ring cutters, which solves the problem that the traditional ring cutter sampling method requires expanding the sampling area when digging out the ring cutter with a shovel, which easily disturbs the surrounding compacted soil. At the same time, it also solves the problems of slow sampling speed, time-consuming and labor-intensive, and inefficient traditional ring cutter sampling methods.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a undisturbed soil sampling device for a ring cutter, comprising a base, two guide columns symmetrically fixedly connected to the upper end of the base, a bearing beam fixedly connected to the upper end of the guide columns, a threaded rod passing through the middle position of the bearing beam, the threaded rod being threadedly connected to the bearing beam, a pressure plate rotatably connected to the lower end of the threaded rod, the two ends of the pressure plate being slidably connected to the guide columns, a ring cutter installed at the lower end of the pressure plate, and a through hole opened on the base corresponding to the position of the ring cutter.

[0006] By adopting the above structural design, the pressure plate drives the ring cutter to press the soil sample into the ring cutter by rotating the threaded rod in the forward direction. When the soil sample is removed, the threaded rod is rotated in the reverse direction to make the pressure plate drive the ring cutter to rise, so that the ring cutter can be removed from the soil. This reduces the damage to the road surface and improves the sampling efficiency.

[0007] Preferably, a sleeve is fixedly connected to the lower end of the pressure plate, the inner wall of the sleeve is provided with an internal thread, the outer wall of the upper end of the ring cutter is provided with an external thread, and the ring cutter is threadedly connected to the sleeve.

[0008] With the above structural design, the ring cutter is fixed under the pressure plate by a threaded connection, which facilitates the installation and removal of the ring cutter.

[0009] Preferably, the ring cutter is composed of a first half-cylinder and a second half-cylinder joined together. A strip is fixedly connected to the side wall of the first half-cylinder near the second half-cylinder, and a slot matching the strip is opened on the side wall of the second half-cylinder near the first half-cylinder.

[0010] By adopting the above structural design, two semi-cylindrical structures are spliced ​​together to form a ring cutter through a plug-in method, which improves the overall shape of the ring cutter. At the same time, opening the ring cutter can ensure the integrity of the sampled soil and improve sampling efficiency.

[0011] Preferably, the upper end of the threaded rod is provided with a rotating handle.

[0012] The above structural design, with its rotating handle, allows users to easily control the rotation of the threaded rod.

[0013] Preferably, the base has a threaded hole, and a positioning cone is threaded into the threaded hole.

[0014] By adopting the above structural design, the base is fixed to the ground by the positioning cone, which improves the stability of the device during sampling.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By rotating the threaded rod in the forward direction, the pressure plate drives the ring cutter to press the soil sample into the ring cutter in a uniform downward squeezing manner. When removing the soil sample, rotating the threaded rod in the reverse direction causes the pressure plate to drive the ring cutter upward, thus removing the ring cutter from the soil. This reduces damage to the road surface and improves sampling efficiency. By splicing two semi-cylindrical structures into a ring cutter through a plug-in method, the overall shape of the ring cutter is improved. At the same time, opening the ring cutter ensures the integrity of the sampled soil, further improving sampling efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a front view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the ring cutter of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution: a ring cutter for undisturbed soil sampling, including a base 1. Two guide columns 2 are symmetrically fixedly connected to the upper end of the base 1. A bearing beam 3 is fixedly connected to the upper end of the guide columns 2. A threaded rod 5 passes through the middle position of the bearing beam 3. The threaded rod 5 is threadedly connected to the bearing beam 3. A pressure plate 4 is rotatably connected to the lower end of the threaded rod 5. The two ends of the pressure plate 4 are slidably connected to the guide columns 2. A ring cutter 6 is installed at the lower end of the pressure plate 4. A through hole 7 is opened on the base 1 corresponding to the position of the ring cutter 6.

[0022] The lower end of the pressure plate 4 is fixedly connected to a sleeve 10. The inner wall of the sleeve 10 is provided with an internal thread, and the outer wall of the upper end of the ring cutter 6 is provided with an external thread 12. The ring cutter 6 is threadedly connected to the sleeve 10.

[0023] The ring cutter 6 is composed of a first half-cylinder 601 and a second half-cylinder 602. The first half-cylinder 601 is fixedly connected to the side wall near the second half-cylinder 602 with an insert 11. The second half-cylinder 602 is provided with a slot that matches the insert 11 on the side wall near the first half-cylinder 601.

[0024] The upper end of the threaded rod 5 is provided with a rotating handle 9. The rotation of the threaded rod 5 is controlled by rotating the rotating handle 9.

[0025] The base 1 has threaded holes, and positioning cones 8 are threaded into the threaded holes. The positioning cones 8 are respectively installed at the four corners of the base 1.

[0026] Working principle: In actual operation, place the device on the soil point to be tested, align the through hole 7 with the soil point, and drive the positioning cones 8 at the four corners of the base 1 into the soil to fix the base 1 to the ground. The user rotates the handle 9 in the forward direction, causing the threaded rod 5 to rotate and press down, so that the pressure plate 4 drives the ring cutter 6 to press the soil sample into the ring cutter 6 in a uniform downward squeezing manner until the ring cutter 6 is full of sample. Then, rotate the threaded rod 5 in the reverse direction, so that the pressure plate 4 drives the ring cutter 6 to rise, and the ring cutter 6 can be removed from the soil. Unscrew the ring cutter 6 from the sleeve 10, clean the outer surface and excess soil, open the ring cutter 6, place the soil sample into the bag, screw the ring cutter 6 back into the sleeve 10, move the device to the next soil sampling point, and repeat the above steps.

[0027] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ring cutter for undisturbed soil sampling, characterized in that: The base (1) includes two guide columns (2) symmetrically fixedly connected to the upper end of the base (1). A bearing beam (3) is fixedly connected to the upper end of the guide column (2). A threaded rod (5) passes through the middle position of the bearing beam (3). The threaded rod (5) is threadedly connected to the bearing beam (3). A pressure plate (4) is rotatably connected to the lower end of the threaded rod (5). The two ends of the pressure plate (4) are slidably connected to the guide column (2). A ring cutter (6) is installed at the lower end of the pressure plate (4). A through hole (7) is opened on the base (1) corresponding to the position of the ring cutter (6).

2. The undisturbed soil sampling device for a ring cutter according to claim 1, characterized in that: The lower end of the pressure plate (4) is fixedly connected to a sleeve (10), the inner wall of the sleeve (10) is provided with an internal thread, the outer wall of the upper end of the ring cutter (6) is provided with an external thread (12), and the ring cutter (6) is threadedly connected to the sleeve (10).

3. A ring cutter for undisturbed soil sampling according to claim 1 or 2, characterized in that: The ring cutter (6) is composed of a first half-cylinder (601) and a second half-cylinder (602). The first half-cylinder (601) is fixedly connected to the side wall near the second half-cylinder (602) with an insert (11). The second half-cylinder (602) has a slot that matches the insert (11) on the side wall near the first half-cylinder (601).

4. The undisturbed soil sampling device for a ring cutter according to claim 1, characterized in that: The upper end of the threaded rod (5) is provided with a rotating handle (9).

5. The undisturbed soil sampling device for a ring cutter according to claim 1, characterized in that: The base (1) has a threaded hole, and a positioning cone (8) is threaded into the threaded hole.

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